CodeHS - Unit 4 - Digital Information

What is the number base of the binary number system?

• 10

• 2

• 1

• 0

In the binary value 100₂, what is the place value of the 1?

• 100s place

• 2s place

• 4s place

• 1s place

What is the value of 13₁₀ in binary?

• 101₂

• 1101₂

• 1110₂

• 10000₂

How many possible values can be created with only 2 bits?

• 4

• 2

• 11

• 3

How many bits are used to encode a character according to the ASCII encoding scheme?

• 2 bits

• 4 bits

• 6 bits

• 8 bits

What is a pixel?

• A grid of several colors in a digital image

• Another name for a digital image

• A single tiny dot, or square, of color in a digital image.

• A small picture

What is the value of 9F₁₆ in binary?

• 1001 1111₂

• 1111 1001₂

• 0111 1000₂

• 1100 0011₂

What is the value of C₁₆ in decimal?

• 16₁₀

• 12₁₀

• 6₁₀

• 13₁₀

What are the 3 color channels that make up a pixel according to the RGB color scheme?

• Red, Green, and Blue

• Red, Blue, and Yellow

• White, Black, and Gray

• Cyan, Magenta, and Yellow

What is the range of values (expressed in decimal) that each color channel can have?

• 1₁₀ - 256₁₀

• 0₁₀ - 255₁₀

• -128₁₀ - 127₁₀

• 0₁₀ - 127₁₀